Experimental and modeling investigation on post-combustion carbon dioxide capture using zeolite 13X-APG by hybrid VTSA process

Chemical Engineering Journal, Volume 197, 15 July 2012, Pages 151–161
Experimental and modeling investigation on post-combustion carbon dioxide capture using zeolite 13X-APG by hybrid VTSA process
Lu Wang a
Zhen Liu a
Ping Li a
Jianguo Yu a
Alirio E. Rodrigues b
a State Key Laboratory of Chemical Engineering, College of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
b Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
Abstract
Reports evaluation of Zeolite 13X-APG with Si/Al ratio of 1.23 supplied by UOP (China) for capturing low concentration CO2 from flue gas.  Authors found that 13X-APG zeolite has an excellent adsorption capacity to CO2 as compared with the conventional NaX zeolite, especially at low CO2 partial pressure.
They conducted the breakthrough experiments of CO2 and N2 in a column packed with zeolite 13X-APG pellets .  They developed a mathematical model based on the bi-LDF approximation for mass transfer, taking into account the energy and momentum balances, to simulate breakthrough curves in order to obtain the adsorption kinetic parameters of CO2 and N2, respectively.
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